51 | Add to Reading ListSource URL: www.gtsj.orgLanguage: English - Date: 2017-07-11 02:30:44
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52 | Add to Reading ListSource URL: www.icarusinterstellar.orgLanguage: English - Date: 2017-07-13 10:38:49
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53 | Add to Reading ListSource URL: www.gtsj.orgLanguage: English - Date: 2013-02-28 07:33:32
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54 | Add to Reading ListSource URL: www.gtsj.orgLanguage: English - Date: 2012-01-17 11:42:02
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55 | Add to Reading ListSource URL: www.emdrive.com- Date: 2016-08-27 15:42:47
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56 | Add to Reading ListSource URL: spinroot.com- Date: 2013-08-11 14:51:27
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57 | Add to Reading ListSource URL: www.lpi.usra.edu- Date: 2000-04-27 09:24:00
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58 | Add to Reading ListSource URL: spinroot.com- Date: 2013-06-30 13:44:58
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59 | Add to Reading ListSource URL: spinroot.com- Date: 2012-07-30 14:15:10
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60 | Add to Reading ListSource URL: www.unisa.it- Date: 2016-07-26 07:12:42
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